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GB2391424B - A detecting circuit for detecting the presence of a headset connected to a telephone,and a method for detecting a headset connected to a telephone - Google Patents

A detecting circuit for detecting the presence of a headset connected to a telephone,and a method for detecting a headset connected to a telephone

Info

Publication number
GB2391424B
GB2391424B GB0317474A GB0317474A GB2391424B GB 2391424 B GB2391424 B GB 2391424B GB 0317474 A GB0317474 A GB 0317474A GB 0317474 A GB0317474 A GB 0317474A GB 2391424 B GB2391424 B GB 2391424B
Authority
GB
United Kingdom
Prior art keywords
detecting
telephone
headset connected
headset
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB0317474A
Other versions
GB2391424A (en
GB0317474D0 (en
Inventor
Robert Philip James
Andrew Jonathan Dymond
Gerrard Scott Smallwood
John Shields
Michael Tope
Seamus Loftus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lake Electronic Technologies Ltd
Original Assignee
Lake Electronic Technologies Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lake Electronic Technologies Ltd filed Critical Lake Electronic Technologies Ltd
Publication of GB0317474D0 publication Critical patent/GB0317474D0/en
Publication of GB2391424A publication Critical patent/GB2391424A/en
Application granted granted Critical
Publication of GB2391424B publication Critical patent/GB2391424B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
GB0317474A 2002-07-26 2003-07-25 A detecting circuit for detecting the presence of a headset connected to a telephone,and a method for detecting a headset connected to a telephone Expired - Fee Related GB2391424B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE20020617 2002-07-26

Publications (3)

Publication Number Publication Date
GB0317474D0 GB0317474D0 (en) 2003-08-27
GB2391424A GB2391424A (en) 2004-02-04
GB2391424B true GB2391424B (en) 2005-03-23

Family

ID=27772937

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0317474A Expired - Fee Related GB2391424B (en) 2002-07-26 2003-07-25 A detecting circuit for detecting the presence of a headset connected to a telephone,and a method for detecting a headset connected to a telephone

Country Status (2)

Country Link
GB (1) GB2391424B (en)
IE (1) IES20030549A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006174076A (en) * 2004-12-15 2006-06-29 Orion Denki Kk Telephone communication system and mail transmission/reception system
CN103489431B (en) * 2012-10-18 2015-09-09 天津三星电子有限公司 A kind of display terminal
CN104363404B (en) * 2014-10-28 2017-06-23 广州创维平面显示科技有限公司 Terminal multiplexing circuit and multimedia terminal equipment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672663A (en) * 1985-06-28 1987-06-09 Mitel Corporation Telephone handset detector
US5926543A (en) * 1992-03-02 1999-07-20 Gn Netcom, Inc. Headset amplifier with automatic log on/log off detection
US20030060243A1 (en) * 2001-09-24 2003-03-27 Burrus Philip H. Cable or module identification apparatus and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672663A (en) * 1985-06-28 1987-06-09 Mitel Corporation Telephone handset detector
US5926543A (en) * 1992-03-02 1999-07-20 Gn Netcom, Inc. Headset amplifier with automatic log on/log off detection
US20030060243A1 (en) * 2001-09-24 2003-03-27 Burrus Philip H. Cable or module identification apparatus and method

Also Published As

Publication number Publication date
IE20030550A1 (en) 2004-01-28
GB2391424A (en) 2004-02-04
IES20030549A2 (en) 2003-11-26
GB0317474D0 (en) 2003-08-27

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20120920 AND 20120926

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20130725